Design and Fabrication of Wide Cut-off Long-Wave Infrared Bandpass Filters for Space Applications

Citation

张佰森, 马勉军, 熊玉卿. 空间用宽截止长波红外带通滤光片的设计与镀制 [Design and Fabrication of Wide Cut-off Long-Wave Infrared Bandpass Filters for Space Applications]. 红外 (Infrared), [Symbol for Volume], [Symbol for Issue].

Keywords

  • Long-wave infrared (LWIR)
  • Bandpass filter
  • Space applications
  • Optical system
  • Design principles
  • Fabrication methods
  • Plasma-assisted deposition
  • Converging beam infrared optical system
  • High average transmittance
  • Deep cut-off depth
  • Small ripple coefficient
  • High stability
  • High reliability
  • Film layer microstructure
  • Residual stress elimination
  • Symmetric periodic film system
  • Long-wave pass film system
  • Short-wave pass film system
  • Cut-off band
  • Rejection band
  • Wavelength (波长)
  • Equivalent refractive index matching
  • Anti-reflection coating system (消次峰膜系)
  • Matching film layer (匹配膜层)
  • Optical monitoring method
  • Ion beam assisted deposition (离子束辅助沉积)
  • Environmental stability
  • Adhesion
  • Remote sensing
  • Infrared camera
  • Multispectral imager

Brief

This article discusses the design principles and fabrication methods of wide cut-off long-wave infrared bandpass filters for space applications, highlighting the use of a converging beam infrared optical system and plasma-assisted deposition to achieve high performance and stability.

Summary

The article is about designing and making high-performance long-wave infrared (LWIR) bandpass filters for space use, which need high transmittance, deep blocking, and stability. They use specific optical system designs and plasma-assisted deposition. The design combines long-wave pass and short-wave pass filters, and the fabrication uses a converging beam infrared optical system for precise monitoring and plasma-assisted deposition for better film quality.

Origin:

Back to blog